Free Dice Roller Online

How to roll dice online

1. Select the die type you need: D4, D6, D8, D10, D12, D20, or D100.
2. Set the quantity to roll multiple dice of the same type at once.
3. Click Roll to generate the result.
4. Individual die values and the combined total are displayed immediately.
5. Click Roll again for a completely new independent result at any time.

Which die type for which game: a quick reference

Not sure which die to pick? This table covers the most common die types and where each one shows up in popular games and systems.

6 sided dice roller and standard die types

The D6 is the most familiar die type, used in board games, Yahtzee, Monopoly, Risk, and countless other games that do not require specialized RPG dice. Use this as a dedicated 6 sided dice roller by selecting D6 and rolling. Set quantity to 2 to roll 2 dice at once for games that require a combined total, craps-style rolls, or standard two-die board game movement. The dice roller 1-6 result is cryptographically random and statistically equivalent to a physical D6.

Beyond D6, the full set of supported die types covers all polyhedral dice: D4 for the pyramid die, D8 for the octahedron, D10 for percentile and damage rolls, D12 for the dodecahedron, D20 for the icosahedron, and D100 for percentile tables. This dice roll simulator handles any combination within the same interface so you do not need a separate tool for each die type.

DnD dice roller and RPG dice types

The D20 is the centerpiece of Dungeons and Dragons and most D20 System games. Every attack roll, ability check, skill check, and saving throw starts with a D20 roll. A natural 20 is a critical hit in 5th Edition. A natural 1 is a critical failure. This D20 dice roller produces a statistically fair result on every roll with no manipulation possible. Use it for advantage rolls by rolling twice and taking the higher result, or disadvantage by taking the lower.

Beyond the D20, the full RPG dice roller covers every die type called for in D&D 5e and other systems: D4 for magic missile damage, D6 for short sword and most weapon damage, D8 for longswords and healing spells, D10 and D12 for heavy weapons, and D100 for wild magic tables and random encounter charts. For card-based tabletop games that require drawing from a deck alongside dice, the card picker handles random card draws.

Rolling multiple dice: 2D6, 3D8, and combinations

To roll multiple dice of the same type, set the quantity field to the number you need and click Roll. The tool shows each die result individually and the sum as the total. Rolling 2D6 gives values from 2 to 12. Rolling 3D6 for an ability score gives values from 3 to 18. Rolling 4D6 drop lowest (a common character creation method) means rolling 4D6, noting all four values, and mentally discarding the lowest before summing the remaining three.

Showing each die result individually matters for rules that depend on individual die values. Sneak attack damage in D&D requires knowing if any single die rolled a specific value. Exploding dice mechanics in some systems require rerolling dice that hit their maximum. Having each result visible rather than just the total makes this online dice roller more useful than tools that only show the sum.

Dice notation explained: 2d6, 1d20+5, and 4d6 drop lowest

Standard dice notation follows the pattern XdY+Z. X is the number of dice to roll, Y is the die type, and Z is a flat modifier. Here are the most common patterns you will see in rulebooks and online games:

• 2d6: roll 2 six-sided dice and sum the results. Values range from 2 to 12.
• 1d20+5: roll one D20 and add a flat +5 modifier (such as a proficiency bonus or ability score modifier in D&D).
• 4d6 drop lowest: roll 4 D6 dice, remove the single lowest value, and sum the remaining three. This is the most common method for generating D&D ability scores.
• 2d10 (percentile): one die represents the tens digit and one represents the units digit. Results run from 1 to 100. Use the D100 option in this tool to get a single percentile result directly.

To use this tool for notation with modifiers, roll the dice and add the flat modifier yourself. The tool shows the raw dice total, so adding +5 to a 14 gives 19.

Advantage and disadvantage in D&D 5e

Advantage and disadvantage are the core variance mechanic in D&D 5th Edition. When you roll with advantage, you roll 2 D20 dice and take the higher result. When you roll with disadvantage, you roll 2 D20 dice and take the lower result. To simulate this here, select D20, set quantity to 2, and roll. Take the higher value for advantage or the lower value for disadvantage.

The math behind advantage is significant. A plain D20 gives a 5% chance of rolling 20. With advantage, the probability of getting at least one 20 rises to 9.75%. With disadvantage it drops to 0.25%. Advantage also shifts the average roll from 10.5 to roughly 13.8. Disadvantage shifts it the other way to around 7.2. This is why features that grant consistent advantage (like Reckless Attack or the Lucky feat) are so powerful in practice.

Virtual dice roller for remote and online play

Online tabletop gaming sessions over video call or text chat benefit from a shared random dice roller that all players can use on their own screens. Because this virtual dice roller runs in the browser with no install, any player can open it in seconds. Share your screen or paste the result into the chat. The result is as random as a physical roll and visible to everyone watching the same display.

For solo play, solo RPGs, and probability exercises, the random dice roller is useful for any situation where you need an unbiased result. Probability teachers use it to demonstrate distribution across many rolls. Game designers use it to test encounter balance and loot tables. Players use it as a backup when physical dice are lost or unavailable during travel.

How the dice roller randomness works

Each roll uses the browser's crypto.getRandomValues() API to generate a cryptographically secure random number for each die. This is drawn from system-level entropy sources and is fundamentally different from the pseudo-random Math.random() used in basic implementations, which produces deterministic sequences when given the same seed. The result of each roll is uniformly distributed across all faces of the selected die with no weighting toward any face.

The roller has no memory. A streak of high rolls does not make low rolls more likely on the next throw. Each roll is statistically independent. For use cases that require numbered draws without any repetition across multiple rolls, the random number generator with unique mode enabled is the more appropriate tool.